Garuda - Garba Rujukan Digital

All

International Journal of Research in Vocational Studies (IJRVOCAS)

ijrvocas
Website

Published by Yayasan Ghalih Pelopor Pendidikan

ISSN : 27770168 EISSN : 27770141 DOI : https://doi.org/10.53893/ijrvocas.v1i1

Core Subject : Economy, Science, Education, Social, Engineering,

Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

The International Journal of Research in Vocational Studies (IJRVOCAS) is a double-blind peer-reviewed journal. This journal provides full open access to its content on the principle that making research freely and independently available to the science community and the public supports a greater global exchange of knowledge and the further development of expertise in the field of vocational education and training (VET). IJRVOCAS is since the beginning independent from any non-scientific third-party funding. The establishment of the journal was supported between 2015 and 2016 with grants from the Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation). All members of IJRVOCAS work on an honorary basis. The journal is hosted by Ghalih Publishing and the publishing house of the Ghalih Academic. Scope IJRVOCAS covers all topics of VET-related research from pre-vocational education (PVE), initial vocational education and training (IVET) and career and technical education (CTE) to workforce education (WE), human resource development (HRD), professional education and training (PET) and continuing vocational education and training (CVET).

Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)

Articles 221 Documents

2 3 4 5 6

Assess The Level Of Smooth And Stable Of The Suspension When Convert From Mechanical Suspension To Air Suspension Huu Huy Nguyen; Lanh Thanh Le; Thoi Le Nam
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 3 (2021): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (689.445 KB)

This report illustrates the result of calculation of the level of smooth and stable of the bus when converting suspension from mechanical suspension to air suspension. The mechanical vibrations of the automobile in moving process includes: amplitude, frequency, acceleration, .... These factors may affect the safety of goods and the human state in the bus. This result also shows the great strengths of air suspension than mechanical suspension so that the requirement of smooth level in movement is guaranteed which is a good condition to rise the safety of goods in the bus, maitain human health, reduce physical fatigue and psychological tireness of drivers and passengers.

Pyrolysis of Lubricant Waste into Liquid Fuel using Zeolite Catalyst Heru Afriansyah; M. Reza Ramlan; Miranda Roulina T; Yohandri Bow; Fatria
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

The number of means of transportation in Indonesia continues to increase from year to year. Along with this, the amount of used oil waste oil becomes something more useful by considering the high hydrocarbon content, namely the pyrolysis method with a raw material ratio of 1:1 to be converted into liquid fuel which is ready to be commercialized by catalytic cracking process using a zeolite catalyst of a certain amount. 25% by weight of the raw material which is useful for accelerating the reaction so as to save energy use and improve the quality of the resulting product. Observations were made by looking at the effect of temperature variations ranging from 250oC, 300oC, 350oC, to the results of the pyrolysis process which aims to obtain the optimal process temperature.

Effect of Concentration of NaOH and H2SO4 Catalysts on Hydrogen Gas Production Efficiency Diah Iswandari; Idham Mahenri; Yohandri Bow; Adi Syakdani; Robert Junaidi
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Indonesia has an ocean area of 5.8 million km2, water is the event of the decomposition of water compounds (H2O) into hydrogen gas (H2) and oxygen (O2) by using an electric current through water. In this study, the electrolysis of water at an electrolytic concentration containing NaCl can take place quickly with various catalysts of NaOH, and H2SO4 with concentrations of 0.1M, 0.25M, 0.5M, 0.75M, and currents of 15A, 25A and 35A. From the results of the study, it was found that the greater the current and the concentration of the catalyst, the greater the volume of gas produced and the efficiency of the flow, and a significant effect. The highest hydrogen gas produced was 0.4745 L at a concentration of 0.75M with a current of 35A for a NaOH catalyst and with a H2SO4 catalyst, gas with a volume of 0.48823L was produced at a current of 35A and a concentration of 0.75M and the highest current efficiency at a current of 35A the highest efficiency at a concentration of 0.75M was 89.354% for the NaOH catalyst, and the H2SO4 catalyst obtained the highest current efficiency at a concentration of 0.75M, which was 43.325%.

Development of Teaching Modules for Operation and System Stability Courses as a Pilot Project for the Electrical Engineering Study Program Towards Independent Learning Sujito; Aripriharta; Mohammad Rodhi Faiz; Moh. Zainul Falah; Abdullah Iskandar Syah
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

The challenges of the future of education are increasingly complex. The position of educators in the era of the industrial revolution 4.0 tends to be a facilitator who provides the latest information regarding the development of science. Merdeka Learning is an independent and versatile higher education learning model designed to create an unrestricted creative learning community. This development research resulted in teaching material in the form of learning modules and videos for the Operations and System Stability course. The process of developing modules/teaching materials uses the ADDIE development model, namely Analysis, Design, Development, Implementation, and Evaluating. The teaching materials developed are suitable for students to use based on the results of the formative test data and the Likert scale with 86%-100% being very good criteria. In the one-on-one trial, the percentage of expert eligibility was 94.5% for digital modules, and 92% for learning videos. In a small group trial taken from 7 TE 2017 and TE 2018 students, the percentage of eligibility results was 94% for digital modules, and 94.5% for learning videos. Meanwhile, in the field trials taken from 76 students of TE 2017 and TE 2018 the results of the feasibility percentage were 91% for digital modules and 90% for learning videos.

The Moderating Effect of Top Management Team’s Power on the Relationship between CPA Independence & Audit Quality Ching Yen Li; Chao Sheng Liu; Faradillah Amalia Rivai
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

This research integrates the top management teams (TMT)power theory, CPA economic independence theory, and reputation maintenance theory to explore the impact on audit quality. This study used the sample of firms listed on the Taiwan Stock Exchange (TSE) and Taipei Exchange (TPEx) from 2009 to 2016. The empirical results show that as the TMT power of Taiwan companies increases, the audit quality is higher. It is different from the general research that the TMT will conduct earning management based on self-interested behavior. The inference is due to Taiwan's relatively high proportion of family companies. In the face of the trend of social responsibility and the requirements of regulatory agencies, the company’s strategy of maintaining corporate image and successfully operating over to the next generation is presented with high audit quality. In addition, when CPAs face important clients, the CPA’s economy depends on important customers is greater than the effect of reputation maintenance, the audit quality will be reduced. When the TMT power is greater, it will offset the CPA's economic independence effect and enhance the audit quality.

Design of JIB Crane 600 kg Electric Powered Yahya; Indra Gunawan
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

As it is known that the construction of high-rise buildings requires a tool in the form of a JIB Crane, which is used to transport materials from the bottom to the top. This JIB Crane is installed at the top of the tall building. In this case to design this tool requires welding and also a hook that is able to withstand the load being transported and moved. In this plan, the material must be chosen and also careful calculations for certain parts such as welded joints. In this study, a JIB Crane was designed with an electric drive to carry a load of 600 kg. And based on the calculations obtained, the load supported by the construction of the JIB Crane design is able to withstand the load where the load from the design is greater than the load that occurs.

Financial Performance Measurement Using Solvency Ratio at PT. AKR Corporindo Tbk. 2015-2019 Period Bella Puspita Rininda; Yuli Fitriyani; Azizah
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

This study aims to measure the financial performance of PT AKR Corporindo Tbk's 2015-2019 financial statements by using the solvency ratio. The method in this research is quantitative. The subject in this study is the financial statements of PT AKR Corporindo Tbk in 2015-2019 using the solvency ratio. The results of this study indicate that the assessment of financial performance at PT. AKR Corporindo Tbk, for the debt to asset ratio is considered not good because it exceeds the industry average standard that has been set, the debt to equity ratio is considered healthy even though it exceeds the industry average standard, because large funds are obtained from short-term debt, namely debt business, and the long term debt to equity ratio is also considered good because it is below the industry average standard. The results of this study indicate that the solvency ratio at PT AKR Corporindo Tbk has decreased and increased according to industry standards.

A Wheeled Obstacle Avoidance Robot Based On Arduino Microcontroller by fuzzy controller De Van Pham
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.215 KB)

In this paper, one of the basic functions that each self-propelled robot must have is to detect and avoid obstacles during movement, while still performing current tasks such as orbiting, tracking. The paper presents studies on the fuzzy controller combination to perform the functions of tracking and avoiding obstacles for a wheeled self-propelled robot, with two independently controlled active wheels. The ultrasonic sensors are used to detect and determine the distance from the robot to the obstacle, as input data for the obstacle avoidance fuzzy controller. The experiments with different types of obstacles and movement patterns in the laboratory environment gave good results, showing the correctness of the algorithm and the effective working ability of the combined fuzzy controller.

Financial Performance Analysis using Economic Value Added (EVA) Method at PT. Darma Henwa Tbk. Period 2017-2019 Abdul Muta Ali; Adi Saputro; Muhammad Fahmi Nurani; Marliza Noor Hayatie
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 1 (2021): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Measurement of financial performance is the achievement of the company's achievements in a period that describes the financial health condition of the company. This study aims to determine the calculation and measurement of the financial performance of PT financial statements. Darma Henwa Tbk in 2017-2019. Analysis in this study using Economic Value Added (EVA) method. The results of research on PT. Darma Henwa Tbk. shows that 2017 with a value of $199,460 shows a positive value. This is because the value of NOPAT in that year is greater than the capital charge value generated. Meanwhile, in 2018 the value of EVA increased by $2,893,767, which still generated positive value in that year. However, in 2019 EVA value decreased and obtained a negative value of -$764,780. The decrease is caused because the value of NOPAT in 2019 is smaller than the capital charge value.

The Three Phase Induction Motor Test Using MATLAB 2021b/SIMULINK at Bukit Energi Servis Terpadu, Ltd Destra Andika Pratama; Masayu Anisah; Kabul Andi Setiyadi
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

The purpose of the paper is to investigate the performance characteristics squirrel-cage induction motor available. This paper discusses determination parameters for three-phase induction motor based on experimental data, which the standard test data is not completely available in the end-users. Alternatively, equivalent circuit parameters should be estimated based on the released performance data of the induction motor. This paper also describes MATLAB 2021b/Simulink implementation of three phases of induction motor testing, which includes the no-load, full load, and locked rotor tests were performed to identify the equivalent circuit parameters. The value calculated of parameters simulation results has been compared to experimental values as verification and validation techniques. The deviation of measured values was diagnosed between 0.13% and 1.31%.

Page 4 of 23 | Total Record : 221

2 3 4 5 6

Filter by Year

2021 2025

Filter By Issues

All Issue Vol. 5 No. 2 (2025): IJRVOCAS - August Vol. 5 No. 1 (2025): IJRVOCAS - April Vol. 4 No. 4 (2024): IJRVOCAS - Special Issues - International Conference on Science, Technology and Vol. 4 No. 3 (2024): IJRVOCAS - December Vol. 4 No. 2 (2024): IJRVOCAS - August Vol. 4 No. 1 (2024): IJRVOCAS - April Vol. 3 No. 4 (2024): IJRVOCAS - Special Issues - International Conference on Science, Technology and Vol. 3 No. 3 (2023): IJRVOCAS - December Vol. 3 No. 2 (2023): IJRVOCAS - August Vol. 3 No. 1 (2023): IJRVOCAS - April Vol. 2 No. 4 (2023): IJRVOCAS - Special Issues - International Conference on Science, Technology and Vol. 2 No. 3 (2022): IJRVOCAS - December Vol. 2 No. 2 (2022): IJRVOCAS - August Vol. 2 No. 1 (2022): IJRVOCAS - April Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues Vol. 1 No. 3 (2021): IJRVOCAS - December Vol. 1 No. 2 (2021): IJRVOCAS - August Vol. 1 No. 1 (2021): IJRVOCAS - April More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Muhammad Ghalih

Contact Email
ghalih081092@gmail.com

Phone
+628125156396

Journal Mail Official
ijrvocas@gmail.com

Editorial Address
Ghalih Foundation Office Kh. Dewantara RT.07 RW.02, Angsau, Pelaihari, Tanah Laut, Kalimantan Selatan, Indonesia. Code Pos 70814.

Location
Kab. tanah laut,

Kalimantan selatan

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Muhammad Ghalih

Contact Email ghalih081092@gmail.com

Phone +628125156396

Journal Mail Official ijrvocas@gmail.com

Editorial Address Ghalih Foundation Office Kh. Dewantara RT.07 RW.02, Angsau, Pelaihari, Tanah Laut, Kalimantan Selatan, Indonesia. Code Pos 70814.

Location Kab. tanah laut, Kalimantan selatan INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Muhammad Ghalih

Contact Email
ghalih081092@gmail.com

Phone
+628125156396

Journal Mail Official
ijrvocas@gmail.com

Editorial Address
Ghalih Foundation Office Kh. Dewantara RT.07 RW.02, Angsau, Pelaihari, Tanah Laut, Kalimantan Selatan, Indonesia. Code Pos 70814.

Location
Kab. tanah laut,

Kalimantan selatan

INDONESIA